What does PID besides Iphone Processes means

[johnsonxray]

I got a system manager and on that processes running page..I got something like:
881 Springboard
886 imagent
484 misd
456 SCHelper
34 Notifyd
32 BTServer
and the list goes on..
I know they are all the processes running on the iphone..but what does those numbers means..It has a column, namely, PID..err let me guess, the larger the number means the more frequent u use that particular process? or what else..How do I read them..and look at my springboard 800+..is it going to drain battery cos I always refresh the springboard?

 

[cube]

Process ID. It is a number which uniquely identifies the process that can be used with Unix commands.

 

[johnsonxray]

so which means the larger the ID number the more you used that process?

 

[cube]

No, it is just a generated number that is assigned when the process is created to identify it. It means nothing.

 

[robbieduncan]

so which means the larger the ID number the more you used that process?

No. The ID is simply a unique ID (they get re-used eventually but it is unique amongst running processes) assigned when the process starts. It has nothing to do with frequency. Until the IDs loop a large ID indicates the process started later since the last reboot.

 

[johnsonxray]

oh..I thought I can track which are the processes that draining the battery by looking at ther larger number =(